spaulding-



(No Model.)

A. K. & A. M. SPAULDING.

NUT WRENCH.

No. 857,869. Patented Peb.15,1887.

$1 3 VJ v J UNITED STATES PATENT OFFICE.

AL BION K. SPAULDING AND ALPHEUS M. SPAULDING, OF BELGRADE, AS- SIGNORS TO THE AUGUSTA WRENCH COMPANY, OF AUGUSTA, ME.

NUT-WRENCH.

SPECIFICATION forming part of Letters Patent No. 357,869, dated Pebruary 15, 1887 Application filed July 14, 1886. Serial No. 207,390.

(No model.)

To aZZ whom it may concern.-

Be it known that we, ALBION K. SPAULDING- and AL'PHEUS M. SPAULDING, citizens of the United States, residing at Belgrade, in the county of Kennebec and State of Maine, have invented certain new and useful Improvements in Wrenches; and we do hereby declare the following to be a 1" all, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use same. Our invention relates to thatclass ofwrenches wherein the jaws are operated by the turning of the handle of the wrench; and the objectot' our invention is to make a wrench of this class which shall be simple and durable, and easily constructed.

The essential features of our wrench are a central core or spindle having at one end a fixed jaw, and having also a longitudinal slot within which isa flat bar secured to a sliding jaw, said bar having cut on its edges a screwthread which engagesa similar thread cut in a hollow metal handle.

\Ve illustrate our invention by means of the accompanying drawings, in which Figure 1 shows a side view part in section. Fig. 2 shows a plan or top view. Fig. 8 isa view of central spindle. Fig. 4 is a view of flat screw, shown on a somewhat enlarged scale.

A is the central spindle or core. having formed at one end the fixed jaw A. For something over half its length the spindle is of rectangular cross-section, the remaining distance, A being round. At the extreme end is a portion of smaller diameter with a screw-thread cut on it. A slot, a, extending quite through the spindle, reaches for a considerable distance along the length of the same, this slot being sufficiently wide to receive the flat bar 0, having screw-threads c 0 cut on its edges.

Bis a movable jaw, so formed asto slide on the rectangular part of the spindle A. This sildingjaw B is secured to the end of the screw 0 by a pin, 1).

D is a hollow metal handle, having at one end screw-threads (I cut on its interior surface, and at the other end a shoulder, at, which, coming in contact with a shoulder, a", formed on the spindle A, prevents it from moving .toward the jaws. The screw-threads d are made to engage the threads 0 on the edge of the screw 0.

G is a nut, which screws on the end of spindie A and forms the tip of the handle.

The operation of our wrench is evident from its construction. The handle D is held in its place on the spindle by means of the shoulder a and .the nut G. Upon being turned the screw threads d, engaging the screw-threads c c on the bar 0, move said bar back and forth, and with it thejaw B, to which it is attached. The handle D may be held in place on the spindle A by other means than the nut G and shoulder a"-as, for instance, by a pin playing in aslot extending around the circular portion of spindle A, so that we do not wish to confine ourselves to the means here shown.

We claim A wrench composed ot'a central spindle with a fixed jaw and a longitudinal slot, a sliding jaw adapted to move on said spindle and secured to aflat bar sliding in said slot andhaw ing cut on its edges screw threads, which threads engage similar threads on the interior surface of a hollow handle, said handle'being provided with means for securing and holding it in position on the spindle, all as and for the purpose set forth.

In testimony whereof we aflixour signatures in presence of two witnesses.

ALBION K. SPAULDIN G. ALPHEUS M'. SPAULDIN G. Witnesses:

' S. W. ,BATES,

THOMAS E. MURPHY. 

